A display device may include a substrate, a first electrode on the substrate, a pixel defining layer exposing the first electrode and covering a side of the first electrode, a second electrode on the first electrode, a hole injection layer between the first electrode and the second electrode and having an upper surface having a side protruding toward the second electrode, a light emitting layer between the hole injection layer and the second electrode and having an upper surface having a side protruding toward the second electrode. A shortest distance between a first fixing point between the side of the upper surface of the hole injection layer and the pixel defining layer and a second fixing point between the side of the upper surface of the light emitting layer and the pixel defining layer is greater than or equal to an insulation breakdown limit distance of the light emitting layer.